K2 SummitRun on the historic Western States trail, crossing no-hands bridge twice and tackle one of the toughest climbs in the area, and training grounds for top runners, the dreaded K2 climb. 50k (34 miles) r ...(continued)

50 K35 KHalf Marathon8 Miles

CaliforniaAuburn

K2 Summit Trail Starting at the beautiful American River Canyon Overlook Park, run on the historic Western States trail, crossing no-hands bridge twice and tackle one of the toughest climbs in the area, and training ...(continued)

50 K

CaliforniaCool

K9 Gladiators Obstacle Run ALS FundraiserWant to get down and dirty with your dog? How does a MUD and OBSTACLE course for you and your K9 Gladiator sound? And it gets better - you have the option to raise money to help find a cure for ALS!

3 Miles

CaliforniaPescadero

K9s For Kula5K & 1 Mile race with dogs through the trails of Campgaw Mountain Reservation to benefit the Kula for Karma Foundation.

5 K1 Mile

New JerseyMahwah

KAH 5K Dog Walk and Fun RunWe are very excited to be putting on our first (hopefully annual!) 5k fun run for you and your dog! The event is scheduled to take place October 8, 2011, starting in the Muny Parking Lot of Forest Pa ...(continued)

Kansas City Army ROTC Centennial 5KPony Express Battalion Detachment Army ROTC Program presents the Kansas City Army ROTC Centennial 5K in celebration of the 100th year of the ROTC program as a national organization. Takes place on April 23rd, 2016 8:00AM at the National World War I Museum/Liberty Memorial located in the heart of Kansas City, MO.

5 K

MissouriKansas City

Kansas City Dirty Duo 5KGet down and dirty at the 2017 Kansas City Dirty Duo 5K. It's 3.1 miles
of mud, mystery obstacles, mud, music, mud and MORE MUD!
It's happening at the scenic trails of Unity Village in Lee's Summi ...(continued)

Kappa Sigma Charity 5k Run/WalkThe Kappa Sigma Chapter at Washburn University is hosting a charity 5k run/walk to support the Military Heroes Campaign. All proceeds go to support our Military Heroes. You can sign up at the website.

5 K

KansasTopeka

Karen Johnson Memorial Run (5k/10k)This race is being conducted by Cirris Systems in remembrance of Karen Johnson, who was a beloved employee that tragically lost her life in a cycling accident.

Katcina Mosa 100K Mountain RunA VERY, VERY challenging, difficult and scenic loop course through the Wasatch Mountains above Provo, Utah. About 42% will be on the same course as the Squaw Peak 50. These sections are Mile 2.1, Pole ...(continued)

100 K

UtahSpringville

Katies Run for AutismThe inaugural Katie's Run for Autism, a 10K/5K/2.5K event. is presented by the Katie Stout Foundation, in conjunction with Heartland Endurance Sports. This not-for-profit foundation was established in ...(continued)

Katz JCC Oy Vey 5k RunIn celebration of the Katz JCC's 20th Anniversary at our current Springdale/Kresson location the JCC we will be hosting a special edition of our annual 5k run.
The 5k run will take place on our USATF ...(continued)

11 K5 K

New JerseyCherry Hill

Kau Coffee Trail Run4th Annual Ka'u Coffee Trail run celebrates its award winning Ka'u coffee. All proceeds from this event stay in Ka'u to benefit the Ka'u community.
To Register for this race click on this link Register Here

Half Marathon10 K5 K

HawaiiPahala

Kau Family Fun Fest Ka'u Family Fun Fest "The Southernmost Goodwill Games in the USA!" A fun-filled day of free live music & entertainment for the whole family. 1/2 Marathon, 10K, 5K & children's races, tournaments, games, prize drawings & auctions all benefiting the Ka'u community.

KC Miles for Music 5K and 1K Fun RunWelcome to the Klein Collins Tiger Band's 1st Annual Miles for Music 5K Run/Walk. This timed event is open to the community and runners of all ages. The proceeds from our Miles to Music event will directly benefit the Klein Collins High School Tiger Band. Race entry fee includes: race fee, race t-shirt, finisher's medal and entrance to the Race After-Party.

5 K1 K

TexasSpring

Keep Hallahan Running 5k Run/WalkProceeds from the 5k will help sustain the Keep Hallahan Running Endowment, a tuition assistance fund for girls at John W Hallahan Catholic Girls High School.

5 K

PennsylvaniaPhiladelphia

Keep LA RunningThe 17th annual Keep L.A. Running 5K Run/Walk, 10K Run, Kids Dash, and 10/20k Coastal Bike Cruise hits the beach, at its traditional site, Dockweiler Beach in Playa Del Rey! Join us for some amazing running above the beaches of LA County and one of the best post-event festivals around!

10 K5 K

CaliforniaPlaya del Rey

Kegs N KsAt Kegs & K's we have combined two of our favorite things: Running and Beer! No more waiting until the end of the race to have a beer (you'll get that too), we make sure that everyone is good and hydrated before, during and after every race!
So what are you waiting for!?! Get out of that chair, strap on your running shoes, grab a six pack and start training!

Kelson J Wood 5kOn Saturday, August 31st, a fundraising event in honor of Kelsen will be held at South Davis Recreation Center (200 W 400 N Bountiful, UT 84010). The event will consist of a 5K Run/Walk, a yard/bake sale, blood drive, and benefit concert. 100% of the proceeds from this event will go directly to the Wood family in their time of need.

Kentlands Lakelands 5-KKentlands/Lakelands 5K Run, Walk and Kids’ Fun Runs
Saturday, September 3, 2011
8 a.m.
Kentlands Downtown
This is a USTAF certified course with Chip Timing, line entertainment & 2 water stops to participants as they wind through the award-winning new urbanist communities of the Kentlands & Lakelands. Race proceeds go to several local charities each year, helping those in need in the Greater Gaithersburg area & beyond.

5 K

MarylandGaithersburg

Kents Run Kent’s Run was established to raise money for The Leukemia & Lymphoma Society and to honor the life of Kent Ribordy, a Boone Grove High School student/athlete who passed away in June 2007 from Leukemi ...(continued)

Kentucky Derby Festival MarathonCertified. Includes two city parks designed by Frederick Law Olmsted, Churchill Downs, the newly developed waterfront, and several eclectic neighborhoods.

Marathon

KentuckyLouisville

Kentucky Derby Festival Marathon/miniMarathon & RelaysThe scenic route will include sections of two scenic city parks designed by the esteemed Frederick Law Olmsted, historic Churchill Downs, Louisville's newly developed waterfront, a skate park and several eclectic neighborhoods.

MarathonHalf Marathon

KentuckyLouisville

Kentucky Ultra Trail Sojourn There will be about one mile of paved roads, 6 miles of gravel roads (50 mi only), and the rest will be dirt trails. The first section of the course will include the climb up Tater Knob Fire Tower, HogPen Trail (to add in more mud), and more "fun" hills, since last year's course was too easy!!!

50 Mile50 K

KentuckyMorehead

Kenya Dig It? 5k Run/WalkCome out and support the Arizona State University Chapter of Engineers Without Borders-USA as we raise money for our water project in Kenya! Kenya dig it? 5k run, walk or fun run!

Kettle Moraine 100 Endurance RunsThis year our 100 km race is a part of the Montrail Ultra Cup series. By participating in the 100 km race you are automatically entered in the Montrail Ultra Cup point’s race. In order to remain involved you must register for the series at http://run.montrail.com. There are many ways to win in the 2004 Montrail Ultra Cup. Please visit the Montrail UltraCup website for more information.

Key Biscayne Half Marathon and 10KThe Key Biscayne Half Marathon is designed to take runners over a spectacular and naturally scenic course. The 13.1-mile route starts and finishes in beautiful Key Biscayne. Runners race along the Ri ...(continued)

Key West Half Marathon7 a.m. Certified. Waterfront course loops the island, including sections along the beaches and through Old Town Key West.

Half Marathon

FloridaKey West

Kiawah Island Marathon All courses will run through scenic Kiawah Island. Enjoy maritime forest, marsh views and grand homes as you run through the island community. Course is flat and tree lined, offering wind protection. ...(continued)

Kids and Tail WaggersPlease join us for a day of fun for the whole family on March 25, 2017. We start with a 5k fun run followed by 1 mile dog run/walk along the shores of beautiful Lake Lewisville then round off the day ...(continued)

5 K1 Mile

LAKE DALLASHickory Creek

Kids Chance 5/10K Run/WalkThe Kids' Chance of PA 5/10Ks were established in 2008 to help the organization with its outreach to the community at large. The goal was to bring light to our mission and to raise money for college scholarships. The run/walk provided a forum to do so in the general community, not just within the insurance industry. With board support and the help of a very dedicated staff, the 5/10Ks have helped boast scholarship goals to an all time high,and we have been able to spread our message to thousands of people.

KidStockA family fun event on Saturday August 3, 2013, starting with a 5K family Fun Run/Walk and followed by a Kickball tournament, games, food and music at Kinderberg Park - all to raise funds to beautify t ...(continued)

Kings Island Glow Run 5K or 1 mileStars aren’t the only things that shine at night—REV3 Glow runners do too! Come on out for an evening of family fun, where you can take part in a 5K fun run dressed to the hilt with glow sticks and al ...(continued)

5 K1 Mile

OhioMason

Kings Mountain Marathon and Half MarathonIn 1780, atop Kings Mountain the Patriot Militia toppled the Royal Loyalists in the Revolutionary War. When the smoke cleared on the mountain’s steep western ridge, the Patriot Militia stood victoriou ...(continued)

Kiwanis Family 5K for the KidsThe Kiwanis Family 5K for the Kids will benefit Kiwanis of East Orange County's efforts to support the local schools. It is a 5K Run/Walk with a Kid's Fun run at the end.

5 K

FloridaOrlando

Kiwanis Lake CityThis is a small town marathon with the host hotel just 5 minutes from the start. You will probably not find large crowds here, but should have an easy time locating our start and finish area and hopef ...(continued)

Marathon

IndianaWinona Lake

Kla Ha Ya Days River RunA great family tradition that kicks off the Kla Ha Ya Days Festival in historic Snohomish. There is an event for everyone. Run along the beautiful Centennial Trail and the finish along the Snohomish ...(continued)

Knees 2 War - Enid10K Run, 5K Run/Walk, and 1 mile Run/Walk will benefit a children's home in India

10 K5 K1 Mile

OklahomaEnid

Knees 2 War- TonkawaThe Knees 2 War 10K/ 5K/ 1mile Walk/Run supports children in India. The race is in Tonkawa,OK, on April 8, 2017.

10 K5 K1 Mile

OklahomaTonkawa

Knickerbocker Canyon Trail RunHalf marathoners will run on the historic Western States trail, out to no-hands bridge and will then tackle one of the toughest climbs in the area, and training grounds for top runners, the dreaded K2 ...(continued)

Knoxville MarathonCome experience southern hospitality at its finest. With our pre-race EXPO in the Knoxville Convention and Exhibition Center, our finish line inside Neyland Stadium, and our post-race activities inside the concourse of the Stadium, this promises to be a truly spectacular event.

KPMA 5K Donut Dash5K road Race with a Twist. The KPMA 5K/Donut Dash is a traditional 5k race for the serious runners, however we added a twist for those not as committed to the sport. A racer can chose to walk or run t ...(continued)

5 K

MassachusettsPlainville

KPVFC 9-11 Memorial RUnPlease come out and join us to run/walk in the 3rd annual KPVFC 9-11 Memorial Run. Proceeds help build and maintain the King of Prussia 9-11 memorial.

5 K

PennsylvaniaKing of Prussia

Krause Springs 10k TrifectaThree 10k Trail Races in One Day! Run Just One or Run all Three!
8:00am – SPEEDING on trails in the cool morning air
2:00pm – SCORCHING hot in the afternoon sun
8:00pm – STUMBLING through trails in ...(continued)

10 K

TexasSpicewood

Kraut Run 8kTimed 8k in Fredericksburg, TX during Oktoberfest Weekend!

8 K

TexasFredericksburg

KRC Miles4Mission Run/Walk and Health and Fitness FairJoin the Kingdom Running Club by putting feet to your faith
and RUN OR WALK to support Missions outreach at Living Word Christian Center.
REGISTER NOW for either the 5K or 1-mile motivational walk/run.
RACE DATE: SATURDAY, AUGUST 6TH
REGISTRATION COST 5K | $35
1 mile Motivational Run/Walk $20 Adults
$10 Children 12 & under
Health and Fitness Fair- FREE
$5.00 off the first 150 registered for the 5K
Register by July 15th to receive a shirt.
For more information about this event, call 708.697.5358 or
email: krc@lwcchelps.org.

Kristins Krusade 5kThe race purpose is to raise funds to create grants for agencies in Philadelphia and Baltimore working to educate about dating violence on college campuses

5 K

PennsylvaniaPhiladelphia

Kristins Krusade 5KKristin's Krusade 5K
Saint Joseph's University Philadelphia, PA
Sunday, November 7
More info can be found at: http://www.kristinskrusade.org or http://www.runreg.com/events/register.asp?EventID=2475

5 K

PennsylvaniaPhiladelphia

Krolls Diner Bismarck MarathonThe Kroll's Diner Bismarck Marathon attracts runners from all over the United States and Canada. The course is USATF certified and so serves as a qualifying race for the Boston Marathon and New York C ...(continued)